"C Language" easy Address Book

We use multiple files for writing to implement "Contact.h" #ifndef  __CONTACT_H__#define __CONTACT_H__#define MAX_NAME    20#define max_sex 3#define max_tele 12#define max_addr 20#define max  1000#define INIT_SIZE 100#define INC 100#include <stdio.h> #include   <string.h> #include  <stdlib.h>enum OP{    EXIT,     ADD,    DEL,    SEARCH,    MODIFY,     show,    clr,    sort};typedef struct peo_ info{    char name[max_name];    char sex[max_sex];     int age;    char tele[max_tele];    char &NBSP;ADDR[MAX_ADDR];} Peo_info;typedef struct dhb{    peo_info *pinfo;    int &nbsP;count;    int size;} Dhb,*pdhb;void menu (); VOID&NBSP;INIT_DHB (PDHB&NBSP;PDHB); VOID&NBSP;ADD_DHB (PDHB&NBSP;PDHB); void del_ DHB (PDHB&NBSP;PDHB); VOID&NBSP;SEARCH_DHB (PDHB&NBSP;PDHB); VOID&NBSP;MODIFY_DHB (PDHB&NBSP;PDHB); void show_ DHB (PDHB&NBSP;PDHB); VOID&NBSP;CLEAR_DHB (PDHB&NBSP;PDHB); VOID&NBSP;SORT_DHB (PDHB&NBSP;PDHB); Void save (PDHB &NBSP;PDHB); #endif  //__contact_h__ "contact.c" #include   "Contact.h" Void menu () {     printf ("*************************\n");     printf ("**** 1.add     2.del  ****\n ");     printf (" **** 3.search 4.modify***\n ");     printf ("**** 5.show   6.clear ***\n");     printf ("*****7.sort   0.exit  ***\n");     printf ("*************** \ n ");} Static int find_entry (pdhb pdhb,const char*&Nbsp;name) {    int i = 0;    for  (i = 0;  i < pdhb->count; i++)     {         if  (0 == strcmp (name, pdhb->pinfo[i].name))          {            return i;         }    }    return  -1;} Static void init_add (PDHB&NBSP;PDHB,&NBSP;PEO_INFO&NBSP;*PEO) {    if  (( Pdhb->count >= pdhb->size)  &&  ((Pdhb->size < max))      {        if  (pdhb->size + inc  > max)         {             pdhb->size = max - pdhb->size;         }        else if  (pdhb->size + inc  <= max)         {             pdhb->size = pdhb->size + INC;         }        pdhb->pinfo = realloc ( Pdhb->pinfo, pdhb->size*sizeof (Peo_info));        if  ( Pdhb->pinfo == null)         {             printf ("out of memory\n");             exit (1);         }     }    else if  ((Pdhb->size >= max))     {         printf ("phone book is full \");        return;     }    pdhb->pinfo[pdhb->count] = *peo;     pdhb->count++;} VOID&NBSP;INIT_DHB (PDHB&NBSP;PDHB) {    peo_info buf;    file  *pfread = fopen ("Contact.dat", "R");    if  (Pfread == null)     {        perror ("open file for  Read ");         exit (exit_failure);    }     pdhb->count = 0;    pdhb->size = INIT_SIZE;     pdhb->pinfo =  (peo_info *) malloc ((pdhb->size)  *sizeof (Peo_info));    if  (pdhb->pinfo == null)     {         printf ("out of memory\n");         exit (1);    }        while  (Fread (&buf, sizeof (peo_info),  1, pfread)     {         init_add (PDHB,&NBSP;&AMP;BUF);     }    fclose ( Pfread);} VOID&NBSP;ADD_DHB (PDHB&NBSP;PDHB) {    if  ((pdhb->count >= pdhb-> Size)  &&  ((Pdhb->size < max))     {         if  (Pdhb->size + inc > max)          {            pdhb- >size =&nbsP max - pdhb->size;        }         else if  (Pdhb->size + inc <= max)          {            pdhb- >size = pdhb->size + INC;        }         pdhb->pinfo = realloc (pdhb->pinfo, pdhb-> Size*sizeof (Peo_info));        if  (pdhb->pinfo ==  NULL)         {             printf ("out of memory\n");             exit (1);        }    }     else if&nbSP; ((Pdhb->size >= max))     {         printf ("phone book is full \");        return;    }     printf ("name:>"); &NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%s",  pdhb->pinfo[pdhb->count]. name);     printf ("Gender:>"); &NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%s",  pdhb->pinfo[pdhb- >count].sex);     printf ("Age:>"); &NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%d",  &pdhb- >pinfo[pdhb->count].age);     printf ("Phone:>"); &NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%s",  pdhb->pinfo[pdhb->count].tele)     printf ("Address:>");     scanf ("%s",  pdhb->pinfo[pdhb->count].addr);    pdhb->count++;     printf ("Add success \ n");} VOID&NBSP;DEL_DHB (PDHB&NBSP;PDHB) {&NBSP;&NBSP;&NBSP;&NBSP;CHAR&NBSP;NAME[MAX_NAME];&NBSP;&NBSP;&NBSP;&Nbsp;int ret = 0;    printf ("Please enter the name of the person to be deleted:>");     scanf ("%s",  name);     ret = find_entry (Pdhb, name);     if  (ret == -1)     {         printf ("The person to remove does not exist \ n");        return;    }     else    {        int j  = 0;        for  (j = ret; j <  pdhb->count-1; j++)         {             pdhb->pinfo[j] = pdhb->pinfo[j+1];         }        pdhb->count--;         printf ("Delete succeeded \ n"); &NBSP;&NBSP;&NBSP;&NBSP;}}VOID&NBSP;SEARCH_DHB (PDHB&NBSP;PDHB) {     char name[MAX_NAME];    int ret = 0;     printf ("Please enter the name of the person you want to find:>"); &NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%s",  name);     ret =  find_entry (Pdhb, name);    if  (ret == -1)      {        printf ("The person you are looking for does not exist \ n");         return;    }    else    {         printf ("%10s\t%5s\t%4s\t%10s\t%10s\n",  "name",  "Sex",   "Age",  "Tele",  "addr");         printf ("%10s\t%5s\t%3d\ T%10s\t%10s\n ",             pdhb->pinfo[ret]. Name,            pdhb->pinfo[ret].sex,             pdhb->pinfo[ret].age,             pdhb->pinfo[ret].tele,            &NBSP;PDHB-&GT;PINFO[RET].ADDR); &NBSP;&NBSP;&NBSP;&NBSP;}}VOID&NBSP;MODIFY_DHB (PDHB&NBSP;PDHB) {     char name[MAX_NAME];    int ret = 0;     printf ("Please enter the name of the person to be modified:>"); &NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%s",  name);     ret  = find_entry (Pdhb, name);    if  (ret == -1)      {        printf ("The person to be modified does not exist \ n");         return;    }    else    {         printf ("name:>"); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%s",  pdhb->pinfo[ Ret].name);         printf ("Gender:>");      &NBSP;&NBSP;&NBSP;SCANF ("%s",  pdhb->pinfo[ret].sex);         printf ("Age:>"); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%d",  &pdhb->pinfo[ret]. age);         printf ("Phone:>");       &NBSP;&NBSP;SCANF ("%s",  pdhb->pinfo[ret].tele);         printf ( "Address:>"); &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;SCANF ("%s",  pdhb->pinfo[ret].addr);  &NBSP;&NBSP;&NBSP;}}VOID&NBSP;SHOW_DHB (PDHB&NBSP;PDHB) {    int i = 0;     printf ("%10s\t%5s\t%4s\t%10s\t%10s\n",  "name",  "Sex",  "age",  "Tele",   "addr");    for  (i = 0; i < pdhb->count; i++)      {        printf ("%10s\t%5s\t%3d\t%10s\t%10s\n",             pdhb->pinfo[i].name,             pdhb->pinfo[i].sex,             pdhb->pinfo[i].age,             pdhb->pinfo[i].tele,            &NBSP;PDHB-&GT;PINFO[I].ADDR);     }    printf ("sz = %d\n",  pdhb->size);} VOID&NBSP;CLEAR_DHB (PDHB&NBSP;PDHB) {    pdhb->count = 0;} VOID&NBSP;SORT_DHB (PDHB&NBSP;PDHB) {    int i = 0;     int j = 0;    for  (i = 0; i < pdhb->count - 1; i++)     {        for  (j = 0; j  < pdhb->count - 1 - i; j++)          {            if  (strcmp (pdhb-> Pinfo[j].name, pdhb->pinfo[j + 1].name) >0)              {                 Peo_Info tmp = pdhb->pinfo[j];                 pdhb->pinfo[j] = pdhb->pinfo[j +  1];                pdhb- >pinfo[j + 1] = tmp;            }         }    }}void save (PDHB&NBSP;PDHB) {    FILE * pfwrite = fopen ("Contact.dat",  "W");    if  (pfwrite ==  null)     {        perror ("Open file  for write ");         exit (exit_failure);     }    int i = 0;    for  (i = 0;  i < pdhb->count; i++)     {         fwrite (&pdhb->pinfo[i],sizeof (peo_info),  1, pfwrite);     }     fclose (pfwrite);} " TEST.c "#include  <stdlib.h> #include  " Contact.h "Int main () {   &nbsP;DHB&NBSP;DHB;&NBSP;&NBSP;&NBSP;&NBSP;INT&NBSP;INPUT&NBSP;=&NBSP;1;&NBSP;&NBSP;&NBSP;&NBSP;INIT_DHB (&AMP;DHB) ;    while  (Input)     {         menu ();         printf ("Please choose;:");      &NBSP;&NBSP;&NBSP;SCANF ("%d",  &input);        switch  ( Input)         {        case &NBSP;ADD:&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;ADD_DHB (&AMP;DHB);             break;       &NBSP;&NBSP;CASE&NBSP;DEL:&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;DEL_DHB ( &AMP;DHB);            break;          CASE&NBSP;SEARCH:&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;SEARCH_DHB (&AMP;DHB) ;            break;         case MODIFY:             MODIFY_DHB (&AMP;DHB);            break;         case SHOW:         &NBSP;&NBSP;&NBSP;&NBSP;SHOW_DHB (&AMP;DHB);             break;        case CLR:       &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;CLEAR_DHB (&AMP;DHB);             break;        case SORT:         &NBSP;&NBSP;&NBSP;&NBSP;SORT_DHB (&AMP;DHB);             break;        case EXIT:         {            save (&AMP;DHB);             free (Dhb.pinfo);             exit (exit_success);             break;        }                     }     }    return 0;}

This article from "vs LV" blog, declined reprint!

"C Language" easy Address Book